CN204651903U - A kind of threephase motor lacks phase failure protector - Google Patents
A kind of threephase motor lacks phase failure protector Download PDFInfo
- Publication number
- CN204651903U CN204651903U CN201520403074.XU CN201520403074U CN204651903U CN 204651903 U CN204651903 U CN 204651903U CN 201520403074 U CN201520403074 U CN 201520403074U CN 204651903 U CN204651903 U CN 204651903U
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- relay
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- phase
- contactor
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Abstract
The utility model discloses a kind of threephase motor and lacks phase failure protector, comprises three-phase alternating current, three-phase breaker QS, relay J 1, A.C. contactor KM and fuse FU1; It is characterized in that, the A phase of described three-phase alternating current connects the coil of the normally closed coil J4-3 of relay J 4, relay J 2 and A.C. contactor KM by three-phase breaker QS, and the B phase of three-phase alternating current connects the coil of normally closed coil J4-2, the fuse FU2 of relay J 4, relay J 1 and A.C. contactor KM by three-phase breaker QS.The utility model threephase motor lacks phase failure protector, and not only structure is simple, components and parts are few, cost of manufacture is low; and simple to operate, only have two buttons as control element; conveniently can control the work of three phase electric machine, therefore have that structure is simple, easy to use, the advantage of stable performance.
Description
Technical field
The utility model relates to a kind of phase failure protector, and specifically a kind of threephase motor lacks phase failure protector.
Background technology
Three phase electric machine is widely used in the power set of various plant equipment owing to having the advantage such as efficient, energy-conservation, performance is good, it is little to vibrate, noise is low, the life-span is long, reliability is high, easy to maintenance, starting torque is large; but three phase electric machine necessarily requires three phase places ON operation simultaneously when operation; motor internal electric current will be caused excessive if there is arbitrary disconnection mutually; thus motor damage; therefore phase failure protector seems particularly important, and threephase motor in the market lacks phase failure protector most circuit structure complexity, complex operation, performance are stable not.
Utility model content
The purpose of this utility model is to provide a kind of structure threephase motor simple, easy to use to lack phase failure protector, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of threephase motor lacks phase failure protector, comprise three-phase breaker QS, relay J 1, A.C. contactor KM and fuse FU1, the A phase of three-phase alternating current connects the normally closed coil J4-3 of relay J 4 by three-phase breaker QS, the coil of relay J 2 and A.C. contactor KM, the B phase of three-phase alternating current connects the normally closed coil J4-2 of relay J 4 by three-phase breaker QS, fuse FU2, the coil of relay J 1 and A.C. contactor KM, the C identical three-phase breaker QS of three-phase alternating current connects the normally closed coil J4-1 of relay J 4, fuse FU1, the coil of relay J 3 and A.C. contactor KM, the other end of the coil of A.C. contactor KM connects the normally-closed contact of thermal relay RJ, 1 pin of the normally-closed contact of thermal relay RJ connects the circle J4-4 that often bursts at the seams of motor terminal U and relay J 4, 2 pin of the normally-closed contact of thermal relay RJ connect the circle J4-5 that often bursts at the seams of motor terminal V and relay J 4, 2 pin of the normally-closed contact of thermal relay RJ connect the circle J4-6 that often bursts at the seams of motor terminal W and relay J 4, the other end of the normally closed coil J4-1 of relay J 4 connects often burst at the seams the circle other end of J4-6 and the other end of relay J 1 of relay J 4, the other end of the normally closed coil J4-2 of relay J 4 connects often burst at the seams the circle other end of J4-5 and the other end of relay J 2 of relay J 4, the other end of the normally closed coil J4-3 of relay J 4 connects often burst at the seams the circle other end of J4-4 and the other end of relay J 3 of relay J 4, the other end of fuse FU1 connects the circle J1-1 that often bursts at the seams of relay J 1, the other end of the circle J1-1 that often bursts at the seams of relay J 1 connects the circle J2-1 that often bursts at the seams of relay J 2, the other end of the circle J2-1 that often bursts at the seams of relay J 2 connects the circle J3-1 that often bursts at the seams of relay J 3, the other end of the circle J3-1 that often bursts at the seams of relay J 3 connects thermal relay RJ, the other end of thermal relay RJ connects A.C. contactor KM, the other end of A.C. contactor KM connects the coil KM-1 of button SB2 and A.C. contactor KM, the other end of the coil KM-1 of A.C. contactor KM connects the coil KM-2 of A.C. contactor KM, the other end of button SB1 and button SB2, the other end of button SB1 connects the other end of fuse FU2, the other end of the coil KM-2 of A.C. contactor KM connects relay J 4, the other end of relay J 4 connects zero line N.
Compared with prior art; the beneficial effects of the utility model are: the utility model threephase motor lacks phase failure protector, and not only structure is simple, components and parts are few, cost of manufacture is low; and simple to operate, only have two buttons as control element; conveniently can control the work of three phase electric machine, therefore have that structure is simple, easy to use, the advantage of stable performance.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that threephase motor lacks phase failure protector.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of threephase motor lacks phase failure protector, comprise three-phase breaker QS, relay J 1, A.C. contactor KM and fuse FU1, the A phase of three-phase alternating current connects the normally closed coil J4-3 of relay J 4 by three-phase breaker QS, the coil of relay J 2 and A.C. contactor KM, the B phase of three-phase alternating current connects the normally closed coil J4-2 of relay J 4 by three-phase breaker QS, fuse FU2, the coil of relay J 1 and A.C. contactor KM, the C identical three-phase breaker QS of three-phase alternating current connects the normally closed coil J4-1 of relay J 4, fuse FU1, the coil of relay J 3 and A.C. contactor KM, the other end of the coil of A.C. contactor KM connects the normally-closed contact of thermal relay RJ, 1 pin of the normally-closed contact of thermal relay RJ connects the circle J4-4 that often bursts at the seams of motor terminal U and relay J 4, 2 pin of the normally-closed contact of thermal relay RJ connect the circle J4-5 that often bursts at the seams of motor terminal V and relay J 4, 2 pin of the normally-closed contact of thermal relay RJ connect the circle J4-6 that often bursts at the seams of motor terminal W and relay J 4, the other end of the normally closed coil J4-1 of relay J 4 connects often burst at the seams the circle other end of J4-6 and the other end of relay J 1 of relay J 4, the other end of the normally closed coil J4-2 of relay J 4 connects often burst at the seams the circle other end of J4-5 and the other end of relay J 2 of relay J 4, the other end of the normally closed coil J4-3 of relay J 4 connects often burst at the seams the circle other end of J4-4 and the other end of relay J 3 of relay J 4, the other end of fuse FU1 connects the circle J1-1 that often bursts at the seams of relay J 1, the other end of the circle J1-1 that often bursts at the seams of relay J 1 connects the circle J2-1 that often bursts at the seams of relay J 2, the other end of the circle J2-1 that often bursts at the seams of relay J 2 connects the circle J3-1 that often bursts at the seams of relay J 3, the other end of the circle J3-1 that often bursts at the seams of relay J 3 connects thermal relay RJ, the other end of thermal relay RJ connects A.C. contactor KM, the other end of A.C. contactor KM connects the coil KM-1 of button SB2 and A.C. contactor KM, the other end of the coil KM-1 of A.C. contactor KM connects the coil KM-2 of A.C. contactor KM, the other end of button SB1 and button SB2, the other end of button SB1 connects the other end of fuse FU2, the other end of the coil KM-2 of A.C. contactor KM connects relay J 4, the other end of relay J 4 connects zero line N.
Operation principle of the present utility model is: close circuit breaker Q S, and relay J 1, J2, J3 obtains electric, and its coil obtains electric and adhesive, and namely three relay J 1, J2, J3 normally opened contacts close.The normally-closed contact and the A.C. contactor KM coil that then pass through relay J 1, J2, J3 normally opened contact and thermal relay RJ form loop.Close fuse circuit breaking device FU1, FU2.Press start button SB2, A.C. contactor KM coil, relay J 4 coil obtains electric adhesive, and Terminal of motor U, V, W obtain electric, motor entry into service.
Start button SB2 is unclamped in energising, and it will return to open position under spring force.The A.C. contactor auxiliary contact in parallel with start button SB2 and main contacts close simultaneously, and KM coil is still energized, and self-locking three relay J 1, J2, J3 protection power sources have the closed supply of relay J 4 normally opened contact.
When shutting down, click this break contact one disconnection of stop button SB1, contactor auxiliary contact and main contacts all disconnect, and motor is cut off the electricity supply and stall.
Claims (1)
1. threephase motor lacks a phase failure protector, comprises three-phase breaker QS, relay J 1, A.C. contactor KM and fuse FU1, it is characterized in that, the A phase of three-phase alternating current connects the normally closed coil J4-3 of relay J 4 by described three-phase breaker QS, the coil of relay J 2 and A.C. contactor KM, the B phase of three-phase alternating current connects the normally closed coil J4-2 of relay J 4 by three-phase breaker QS, fuse FU2, the coil of relay J 1 and A.C. contactor KM, the C identical three-phase breaker QS of three-phase alternating current connects the normally closed coil J4-1 of relay J 4, fuse FU1, the coil of relay J 3 and A.C. contactor KM, the other end of the coil of A.C. contactor KM connects the normally-closed contact of thermal relay RJ, 1 pin of the normally-closed contact of thermal relay RJ connects the circle J4-4 that often bursts at the seams of motor terminal U and relay J 4, 2 pin of the normally-closed contact of thermal relay RJ connect the circle J4-5 that often bursts at the seams of motor terminal V and relay J 4, 2 pin of the normally-closed contact of thermal relay RJ connect the circle J4-6 that often bursts at the seams of motor terminal W and relay J 4, the other end of the normally closed coil J4-1 of relay J 4 connects often burst at the seams the circle other end of J4-6 and the other end of relay J 1 of relay J 4, the other end of the normally closed coil J4-2 of relay J 4 connects often burst at the seams the circle other end of J4-5 and the other end of relay J 2 of relay J 4, the other end of the normally closed coil J4-3 of relay J 4 connects often burst at the seams the circle other end of J4-4 and the other end of relay J 3 of relay J 4, the other end of fuse FU1 connects the circle J1-1 that often bursts at the seams of relay J 1, the other end of the circle J1-1 that often bursts at the seams of relay J 1 connects the circle J2-1 that often bursts at the seams of relay J 2, the other end of the circle J2-1 that often bursts at the seams of relay J 2 connects the circle J3-1 that often bursts at the seams of relay J 3, the other end of the circle J3-1 that often bursts at the seams of relay J 3 connects thermal relay RJ, the other end of thermal relay RJ connects A.C. contactor KM, the other end of A.C. contactor KM connects the coil KM-1 of button SB2 and A.C. contactor KM, the other end of the coil KM-1 of A.C. contactor KM connects the coil KM-2 of A.C. contactor KM, the other end of button SB1 and button SB2, the other end of button SB1 connects the other end of fuse FU2, the other end of the coil KM-2 of A.C. contactor KM connects relay J 4, the other end of relay J 4 connects zero line N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520403074.XU CN204651903U (en) | 2015-06-12 | 2015-06-12 | A kind of threephase motor lacks phase failure protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520403074.XU CN204651903U (en) | 2015-06-12 | 2015-06-12 | A kind of threephase motor lacks phase failure protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204651903U true CN204651903U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520403074.XU Expired - Fee Related CN204651903U (en) | 2015-06-12 | 2015-06-12 | A kind of threephase motor lacks phase failure protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204651903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026029A (en) * | 2016-08-12 | 2016-10-12 | 张型春 | Open-phase protection device for three-phase motor |
| CN114114984A (en) * | 2021-10-20 | 2022-03-01 | 北京国科诚泰农牧设备有限公司 | Control system of TMR central kitchen |
-
2015
- 2015-06-12 CN CN201520403074.XU patent/CN204651903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026029A (en) * | 2016-08-12 | 2016-10-12 | 张型春 | Open-phase protection device for three-phase motor |
| CN106026029B (en) * | 2016-08-12 | 2018-06-29 | 张型春 | A kind of threephase motor phase-lacking protective device |
| CN114114984A (en) * | 2021-10-20 | 2022-03-01 | 北京国科诚泰农牧设备有限公司 | Control system of TMR central kitchen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20180612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |